EP1499939A2 - A method of transferring information specifying a tool utilized for processing a content protected by ipmp - Google Patents

A method of transferring information specifying a tool utilized for processing a content protected by ipmp

Info

Publication number
EP1499939A2
EP1499939A2 EP03743576A EP03743576A EP1499939A2 EP 1499939 A2 EP1499939 A2 EP 1499939A2 EP 03743576 A EP03743576 A EP 03743576A EP 03743576 A EP03743576 A EP 03743576A EP 1499939 A2 EP1499939 A2 EP 1499939A2
Authority
EP
European Patent Office
Prior art keywords
terminal
xsd
tool
schema
ipmp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03743576A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ming Ji
Zhongyang Huang
Sheng Mei Shen
Takanori Senoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1499939A2 publication Critical patent/EP1499939A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8166—Monomedia components thereof involving executable data, e.g. software
    • H04N21/8193—Monomedia components thereof involving executable data, e.g. software dedicated tools, e.g. video decoder software or IPMP tool
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates

Definitions

  • the present invention relates to content distribution and protection, especially to such applications where the protected content based on MPEG-n is consumed by different IPMP (Intellectual Property Management and Protection) terminals, and the same content is protected by different IPMP tools.
  • IPMP Intelligent Property Management and Protection
  • Fig. 7 shows the prior art for the current typical IPMP architecture.
  • IPMP Information unit 1.4 identifies the information directed to a given IPMP Tool to enable, assist or facilitate its operation.
  • FIG. 7 shows an IPMP terminal (module 1.5, a device that consumes possibly protected incoming content in compliance with the usage rules) including IPMP Tool Manager (module 1.6, processes IPMP Tool List(s) unit 1.2 and retrieves the IPMP Tools module 1.8, 1.9, 1.10, 1.11 that are specified therein) and Message Router (module 1.7, implements the Terminal-side behavior of the Terminal- Tool interface).
  • IPMP Tool Manager module 1.6, processes IPMP Tool List(s) unit 1.2 and retrieves the IPMP Tools module 1.8, 1.9, 1.10, 1.11 that are specified therein
  • Message Router module 1.7, implements the Terminal-side behavior of the Terminal- Tool interface.
  • the module 1.8 of Missing IPMP Tools (not available in module 1.5) and the module 1.9, 1.10, 1.11 of IPMP Tool (available in module 1.5) denote the tool that perform (one or more) IPMP functions such as authentication, decryption, watermarking, etc.
  • IPMP provides download ability of tools, where tools can be retrieved remotely. IPMP also allows the terminal to choose its own favourite tool according to parametric description. An IPMP terminal can also aggregate several tools together to form a tool set (act as just one tool) according to some parametric aggregation. An IPMP tool may also optionally carry a tool meta data that specifies information about this tool, for example, whether this tool can run on a particular operating system.
  • IPMP Tool's metadata may optionally include the terminal platform specification that specifies what are the terminals and platforms that the tool can run on.
  • XML schema should be defined for terminal platform specification, parametric description as well as parametric aggregation.
  • the XML schema for terminal platform specification should allow specification of CPU, memory, Operating system, virtual machine, etc, so that the remote site can have a full knowledge of the terminal and choose an appropriate tool for the terminal.
  • the tool metadata contains the terminal platform XML language
  • the terminal can also decide whether this tool can run on it according to the XML language.
  • the parametric description is defined to allow a generic description of any types of IPMP tool, whether it is a decryption tool or a watermarking tool or a rights management tool. Based on the parametric description, an IPMP terminal is then able to choose its own favourite tool.
  • the parametric aggregation is defined to allow the terminal (or master tool) to combine a set of tools, connection points, i/o, etc can all be defined in the parametric aggregation so that the terminal (or master tool) can have a full knowledge of what to do.
  • an IPMP terminal can describe what it is, what the CPU is, what the operating system is, whether there are any assistant hardwares, etc.
  • the IPMP terminal can then send the information to the remote site while trying to retrieve a missing IPMP tool.
  • the remote site after receiving the information, and XML schema parsing, can then decide which tool (a windows DLL or a Java Byte Code, for example) to send.
  • an IPMP tool can also describe on what platform it can run, and carry the information in the metadata associated with the IPMP tool.
  • an IPMP terminal can decide whether this tool can surely run on it.
  • the content provider can now describe what type of tool is required to playback the content, instead of using fixed tool IDs. For example, the content provider can specify that an AES tool, with block size of 128 bits is required to decrypt video stream.
  • the IPMP terminal upon receiving such XML language specifying this tool, can then choose an optimised AES tool from the embedded tools.
  • the content provider can describe what are the tools need to be combined as one tool to process the content.
  • the XML language can specify things like tool IDs, tool i/o, etc. So that the terminal can use the information to build such a tool set.
  • Fig. 1 is a view explaining the method in the fist embodiment of the present invention.
  • Fig. 2 is a view explaining the method in the second embodiment of the present invention.
  • Fig. 3 is a view explaining the method in the third embodiment of the present invention.
  • Fig. 4 is a view explaining the method in the fourth embodiment of the present invention.
  • Fig. 5 shows the architecture of Terminal Platform XML Schema.
  • Fig. 6 shows the architecture of Parametric Aggregation.
  • Fig. 7 shows IPMP architecture for generic IPMP as the prior art.
  • a method of transferring information specifying a tool utilized for processing a content protected by JJPMP from a server to an IPMP terminal uses XML schema for terminal platform specification in MPEG-n IPMP system.
  • a flexible terminal platform schema and language are specified and defined to describe a terminal platform specification in advance. That is, the terminal platform schema and language are standardised to make them known to public.
  • the terminal platform specification includes information describing, in XML schema, terminal functions, terminal performance and so on required for decrypting the content to which the specification is attached, and is described later.
  • a remote server 10 creates terminal platform specification 21 based on the predetermined terminal platform schema and language to specify on what platform or terminal the IPMP tool can run.
  • the created terminal platform specification 21 is attached to metadata 22 associated with the tool 23.
  • the tool 23 together with the terminal platform specification 21 attached to the metadata 22 may be carried in an IPMP protected content.
  • the server 10 transfers the metadata 22 with the terminal platform specification 21 and the IPMP tool 23 to an JJPMP terminal 30 which is implemented with a terminal platform parser 31 based on the terminal platform schema and language.
  • the terminal platform parser 31 can interpret and execute the terminal platform specification 21 according to syntax of given XML schema.
  • the IPMP terminal 30 extracts the terminal platform specification 21 from the metadata 22, and interprets the terminal platform specification 21 to determine whether the IPMP tool is the terminal's desired one, by the implemented terminal platform parser 31.
  • the method uses XML schema for terminal platform specification in MPEG-n IPMP system.
  • An IPMP terminal 30 creates terminal platform specification 21 based on the predetermined terminal platform schema and language to specify itself.
  • the IPMP terminal 30 then transfers the terminal platform specification 21 to a remote server 10 when the IPMP terminal 30 tries to retrieve an IPMP tool 23 from the remote server 10 which is implemented with a terminal platform parser 11 based on the terminal platform schema and language.
  • the server 10 receives the terminal platform specification 21 from the terminal 30, interprets the terminal platform specification 21, determines which JJPMP tool should be sent back to the requesting JJPMP terminal 30, and then sends the determined IPMP tool 23 to the requesting JJPMP terminal 30.
  • the terminal 30 receives the JJPMP tool 23 and uses it to decrypt the content.
  • the method uses XML schema for parametric description in MPEG-n IPMP system.
  • the parametric description is information describing, in XML schema, terminal functions, terminal performance and so on required for decrypting the content to which the specification is attached.
  • a flexible parametric description schema and language are specified and defined to describe an IPMP tool in advance. That is, the parametric description schema and language are standardised to make known to public.
  • a remote server 10 creates a parametric description 25 based on the predetermined parametric description schema and language to specify a desired JJPMP tool, attaches the parametric description 25 to a content 26 that is protected by JJPMP, and transfers the parametric description 25 and the content 26 to an JJPMP terminal 30 which is implemented with a parametric description parser 32 based on the parametric description schema and language.
  • the parametric description parser 32 can interpret and execute the parametric description according to syntax of given XML schema.
  • the terminal 30 extracts the parametric description 25 from the content 26, interprets the parametric description 25, and selects an JJPMP tool from the terminal's tool set 35 that satisfy the parametric description, by the parametric description parser 32. More specifically, when receiving the content, the parametric description parser 32 extracts the parametric description 25 from the received content 26, and routes the extracted parametric description 25 to each JJPMP tool within its tool set 35 to ask whether the tool satisfy the parametric description 25. The parametric description parser 32 compares each JJPMP tool within the terminal's tool set 35 with the parametric description 25 and verifies whether the IPMP tool can satisfy the parametric description 25. The result is made known to the JJPMP terminal 30. The JJPMP terminal 30 can then choose a tool from the tool set that satisfy the parametric description 25.
  • the method uses XML schema for parametric aggregation in MPEG-n IPMP system.
  • the parametric aggregation is described later with reference to Fig. 6.
  • a flexible parametric aggregation schema and language are specified and defined to describe a combination of IPMP tools in advance. That is, the parametric aggregation schema and language are standardised to make known to public.
  • a remote server 10 creates a parametric aggregation 27 based on the predetermined parametric aggregation schema and language to specify a desired combination of JJPMP tools, and attaches the parametric aggregation 27 to a content 26 that is protected by IPMP.
  • the server 10 transfers the parametric aggregation 27 and the content 26 to an IPMP terminal 30 which is implemented with a parametric aggregation parser 33 based on the parametric aggregation schema and language.
  • the JJPMP terminal 30 extracts the parametric aggregation 27 from the content 26, interprets the parametric aggregation 27, and combines the specified JJPMP tools from the terminal's tool set that satisfy the parametric aggregation 27, by the parametric aggregation parser 33.
  • Terminal Platform XML Schema Fig 5 illustrates the architecture of the terminal platform in which a terminal ID is described in the following XML schema.
  • Vendor of the specific terminal for example, a PC's vendor may be DELL
  • Vendor "Vendor of the specific operating system, for example, windows95's vendor is Microsoft"
  • Model "model name of the operating system” Version : “version number of the operating system” SerialNO : “serial number of the operating system , if any” VirtualMachine Vendor : “Virtual Machine's vendor, for example, JVM's vendor is
  • Name "name of the virtual machine, for example, Java Virtual Machine"
  • Vendor "Vendor of the CPU, for example, INTEL” Model : “Model name of the CPU, for example, Pentium” Speed : “Speed of the CPU” Memory Vendor : "Vendor of the memory”
  • Model "Model name of the memory” Size : “size of the memory” Speed : “speed of the memory” AsstHardware SmartCard Vendor : “Vendor of the smartcard” Model : “Model Name of the smartcard” HardKey
  • Type "type of the hardkey, for example, parallel port hardkey" Network
  • Type "type of the network, for example, Ethernet" Detail RPCMechanism
  • the parametric description of the terminal platform is described in the following XML schema.
  • Parametric Aggregation Fig. 6 illustrates the architecture of the parametric aggregation which is described in the following XML schema.
  • the JJPMP terminal can use the terminal platform XML schema to provide the remote site terminal platform specification, so that the remote site can send a tool that can run on this particular JJPMP terminal.
  • An JJPMP Tool's metadata may optionally include the terminal platform specification using the terminal platform XML schema that specifies what are the terminals and platforms that the tool can run on. 3.
  • a parametric description using the parametric description schema to allow terminal to choose a certain IPMP tool that can facilitate the job it is supposed to do.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Technology Law (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Transfer Between Computers (AREA)
  • Document Processing Apparatus (AREA)
EP03743576A 2002-03-05 2003-03-04 A method of transferring information specifying a tool utilized for processing a content protected by ipmp Withdrawn EP1499939A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US36133102P 2002-03-05 2002-03-05
US361331P 2002-03-05
PCT/JP2003/002463 WO2003075576A2 (en) 2002-03-05 2003-03-04 A method of transferring information specifying a tool utilized for processing a content protected by ipmp

Publications (1)

Publication Number Publication Date
EP1499939A2 true EP1499939A2 (en) 2005-01-26

Family

ID=27789109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03743576A Withdrawn EP1499939A2 (en) 2002-03-05 2003-03-04 A method of transferring information specifying a tool utilized for processing a content protected by ipmp

Country Status (7)

Country Link
US (1) US7610630B2 (ja)
EP (1) EP1499939A2 (ja)
JP (1) JP2004007452A (ja)
KR (1) KR20040088464A (ja)
CN (1) CN1331081C (ja)
AU (1) AU2003210009A1 (ja)
WO (1) WO2003075576A2 (ja)

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Also Published As

Publication number Publication date
US7610630B2 (en) 2009-10-27
WO2003075576A3 (en) 2004-10-28
US20050015707A1 (en) 2005-01-20
KR20040088464A (ko) 2004-10-16
JP2004007452A (ja) 2004-01-08
AU2003210009A1 (en) 2003-09-16
WO2003075576A2 (en) 2003-09-12
CN1331081C (zh) 2007-08-08
CN1662864A (zh) 2005-08-31
AU2003210009A8 (en) 2003-09-16

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